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Alex Smith and Kyle Williams teamed up for a 30-yard completion down the right sideline during Sunday's practice (Lacy Atkins/The Chronicle)

This and that from Day 3 of training camp, which featured the first practice in pads:

* The catch of the day goes to Randy Moss, who reached behind his body – and around his ankles — to make a one-handed grab of a Colin Kaepernick pass. Moss made the catch along the left sideline and got both feet inbounds as he was falling backward.

“Think that was worth a note?” a member of the 49ers PR staff asked a few nearby reporters.

Why, yes, I think it is.

* During a one-on-one drill, Moss made a leaping catch over Tarell Brown to snag a back-shoulder throw from Alex Smith.

* Throw of the day: Smith connected with Kyle Williams on a toss about 30 yards down the left sideline. Smith’s pass floated over cornerback Tramaine Brock and hit Williams in stride.

* Block of the day: Tight end Delanie Walker leveled linebacker Larry Grant on a run block, sending the 6-1, 251-pound Grant on his backside. Grant popped back up and stared at Walker, who had his back turned and was jogging back to the huddle.

* The Smiths star: During 7-on-7s, Aldon Smith beat right guard Alex Boone on a stunt and “sacked” Smith. Boone even held the back of Smith’s jersey as he powered past him. It didn’t work.

Later, Justin Smith bulldozed backup center Daniel Kilgore, who, shockingly, managed to pop right back up after he was knocked several yards backwards.

Palmer’s highlight came when he got behind cornerback Carlos Rogers and safety Donte Whitner to haul in a 40-yard pass from Scott Tolzien during a 7-on-7 drill.

Earlier, during a one-on-one drill, Palmer displayed his strength, using a strong inside move on Rogers to haul in a quick slant.

Palmer did drop a pass from Tolzien near the end of practice and clapped his hands in frustration.

* Harbaugh allowed the veterans/starters to leave practice 20 minutes early while the rest of the team continued to work.

On the last play for the veterans, Walker grabbed a slant from Alex Smith and zipped across the middle. Walker is showing no signs of the knee injury that sidelined him near the end of offseason workouts.

* Punter Andy Lee is ready for the season. One of Lee’s punts sailed about 80 yards, prompting one reporter to offer this analysis, “Holy s—.”

* As he seemingly did daily during last year’s training camp, tight end Konrad Reuland made a nice catch of an off-target throw. His latest was a sliding catch of a toss from Scott Tolzien along the right sideline. Reuland spent last year on the practice squad.

* Linebacker Michael Wilhoite, who is also spending time at fullback, catches the ball fluidly and then turns upfield quickly. Wilhoite (6-0, 240), a safety at Division II Washburn University, is surprisingly agile. He spent the final weeks of the 2011 season on the 49ers’ practice squad.

* On Friday, I noted in this blog entry that the 49ers spent much of practice on a far field, which, coupled with the players dotting the sideline, gave the media a distant and obstructed view of the action.

During practice, a member of the team’s PR staff evidently inquired if reporters could move closer to the far field, but, alas, no luck. At the time, I was given no reason for why we couldn’t get a better view.

Given the 49ers’ ultra-secretive nature – Harbaugh closed regular-season practices for the first time in team history last year – I wrote that the situation wasn’t exactly shocking.

Well, as it turns out, the team does have a legitimate reason for keeping reporters away from the far field. Due to construction during the offseason, the 49ers lost about 60,000 square feet from their practice-field area.

Due to the tight quarters – there’s not much space between the back of the end zones and the fences that surround the area – reporters, photographers, scouts and other guests are being kept at a distance. It an issue of safety.

The 49ers are also rotating which fields they use predominantly each day to keep the grass fresh. The first two days they practiced mainly on the far field. Today, we had an excellent view of practice as they worked primarily on the field nearest reporters.

* I won’t be in Santa Clara on Monday (a family member is having a minor surgical procedure), so the blog will be in the capable hands of The Chronicle’s Ron Kroichick. Be nice to him and maybe he’ll share some entertaining stories from his days as a Raiders beat writer.